Question

Describe the variation in the hart breeding​

Answer 1

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Heart rate variability or HRV is the physiological phenomenon of the variation in the time interval between consecutive heartbeats in milliseconds. A normal, healthy heart does not tick evenly like a metronome, but instead, when looking at the milliseconds between heartbeats, there is constant variation.

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Answer 2

Answer:

six breeds (German shepherd dogs, labrador retrievers, cocker spaniels, ... information about high-frequency variations in heart rate,.